Gods Word tells us that we have to Wherefore come out from among them, and be ye separate, saith the Lord, and touch not the unclean thing; and I will receive you. 2Cor 6:17 If we want to be separated from the world, we must stay close to Jesus. We cannot always avoid contact with the world but we can avoid being involved in the sin. I remember passing a football ground 45 years ago hanging onto my fathers hand, on hearing the curses and profanities my father hurried me past and praised the Lord he was not part of it. Today Christians stand beside the same people ....if anyone passed by they would look the same if anyone looked on they would think they were the same. Is it a sin to partake of the worlds pleasures?